Existence of solutions to first-order periodic boundary value problems
2006 ◽
Vol 323
(2)
◽
pp. 1325-1332
◽
2009 ◽
Vol 3
(4)
◽
pp. 501-509
◽
2000 ◽
Vol 73
(4)
◽
pp. 493-502
◽
1998 ◽
Vol 99
(2)
◽
pp. 465-480
2020 ◽
Vol 14
(6)
◽
pp. 281-298
2007 ◽
Vol 327
(1)
◽
pp. 435-452
◽